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Re: Nessus portscan takes loooooong



> However, the initial portscan takes an extremely long time... Actually,
> I haven't seen it finish, because I had to turn my computer off at
> night... :-) But something like 10 hours, it seems like it would need
> to do a portscan... WTF? There's is a progress bar, it moves this slow.
>
> It is just a normal portscan using nmap, that's what nessus starts with,
> isn't it...? Something that usually would take like, 6 minutes...

The duration of an nmap varies greatly dependant of the timing policy you 
use. For example paranoid (-T0) leaves 5min between two scans, resulting 
in roughly 350 (approx. number of services in /etc/services) * 5min ~= 29 
hours.

>
> Looking at the network load of the server, the first 6 minutes or so of
> the process, it is high, but the after that, there seems to be no
> abnormal traffic.
>
> Anybody else seen something like this?

I don't know about this, though. I don't use nessus myself, so perhaps it 
has actually nothing to do with the timing-policy at all...

HTH,
  Johannes
-- 
"More than machinery we need humanity" -- Charlie Chaplin, The Great 
Dictator

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